Petr Kopač (born 19 November 1987 in Czech Republic) is a student and Czech ex-sysop (wikibreak).

This user has worked at projects of free encyclopedia more than one year, being sysop half a year. He has managed to make more than 6000 edits, to get to know new interesting people and to improve his knowledge of foreign languages. Although it is very time-consuming hobby, he is glad to contribute here.

This user contributes to many projects, whereas most of his edits are to be found in cswiki.